Centos安装docker

1、移除旧版本

$ sudo yum remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine

2、安装一些必要的系统工具：

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

3、添加软件源信息：

sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

4、更新 yum 缓存：

sudo yum makecache fast

5、安装 Docker-ce：

sudo yum -y install docker-ce

6、启动 Docker 后台服务

sudo systemctl start docker

7、测试运行 hello-world

 docker run hello-world

 8、启动docker服务

service docker start

docker-compose安装

curl -L "https://get.daocloud.io/docker/compose/releases/download/1.27.3/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

加上可执行权限：

# 下载docker compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.25.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
# 添加可执行权限
sudo chmod +x /usr/local/bin/docker-compose
# 将文件copy到 /usr/bin/目录下
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose
# 查看版本
docker-compose --version

检查版本

docker-compose --version

 在执行docker-compose --version时提示未找到命令

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

 

脚本

#!/bin/bash

# 在 master 节点和 worker 节点都要执行

# 安装 docker
# 参考文档如下
# https://docs.docker.com/install/linux/docker-ce/centos/
# https://docs.docker.com/install/linux/linux-postinstall/

# 卸载旧版本
yum remove -y docker \
docker-client \
docker-client-latest \
docker-ce-cli \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine

# 设置 yum repository
yum install -y yum-utils \
device-mapper-persistent-data \
lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# 添加软件源信息
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# 更新 yum 缓存

yum makecache fast

# 安装并启动 docker
sudo yum -y install docker-ce

mkdir /etc/docker || true

cat > /etc/docker/daemon.json <<EOF
{
"registry-mirrors": ["https://docker.mirrors.ustc.edu.cn","http://hub-mirror.c.163.com","https://docker.mirrors.ustc.edu.cn","https://registry.docker-cn.com"],
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2",
"storage-opts": [
"overlay2.override_kernel_check=true"
]
}
EOF

# Restart Docker
systemctl enable docker
systemctl restart docker

docker version